BPG致力于知识的发现和传播
Total Visits of This Article
2018 | 总访问次数
排名 国家/地区 数量 占比
1 United States 53 53%
2 China 19 19%
3 Germany 8 8%
4 Denmark 8 8%
5 India 3 3%
6 Canada 2 2%
7 France 2 2%
8 Belgium 1 1%
9 Czechia 1 1%
10 Poland 1 1%
11 Taiwan 1 1%
12 Turkey 1 1%